The table shows some characteristics of two different atoms. What can you infer about atoms 1 and 2? A. they are from elements of different chemical properties.

B. they are from elements of different rows in the periodic table.

C. They are isotopes of the same element

D. They are molecules of the same element​

Aspring is used to stop a 50-kg package which is moving down a 20º incline. the spring has a constant k = 30 kn/m and is held by cables so that it is initially compressed 50 mm. knowing that the velocity of the package is 2 m/s when it is 8 m from the spring and neglecting friction, determine the maximum additional deformation of the spring in bringing the package to rest.